-
公开(公告)号：WO2023049549A1
公开(公告)日：2023-03-30
申请号：PCT/US2022/074511
申请日：2022-08-04
发明人： SCHREYER, Earl , GALAL, Sherif , RYU, Sang-Uk , NELSON, Hui-Ya Liao , CHAKKIRALA, Subbarao Surendra , PAYAL, Shreyas Srikanth
摘要： A method includes receiving first data associated with a first power amplifier and second data associated with a second power amplifier. The method also includes generating a first amplitude limiting signal having gain parameters that are based on the first data and the second data. The first data includes at least one of a temperature measurement associated with the first power amplifier, a supply voltage measurement associated with the first power amplifier, a load resistance associated with the first power amplifier, or a gain associated with the first power amplifier. The method further includes modifying an audio signal based at least in part on the first amplitude limiting signal to generate a first gain-adjusted audio signal. The method also includes providing a first output audio signal to the first power amplifier for amplification. The first output audio signal is based at least in part on the first gain-adjusted audio signal.
-
2.发明申请
公开(公告)号：WO2022271472A1
公开(公告)日：2022-12-29
申请号：PCT/US2022/033190
申请日：2022-06-13
IPC分类号： B06B1/02 , G10K9/13 , H03F1/32 , B06B1/0215 , G06F3/016 , H03F1/3247 , H03F2200/03 , H03F3/181 , H03F3/187 , H03F3/2175 , H03G3/3005
摘要： A method may include receiving, by a transducer driving system, a first signal for driving an amplifier that drives an electromagnetic load and receiving, by the transducer driving system, a second signal driven by the amplifier in order to control a feedback loop of the transducer driving system. The method may also include detecting unexpected spectral content in the second signal, declaring an indicator event based on the detected unexpected spectral content, determining whether the indicator event occurs in an undesired pattern, and in response to the indicator event occurring in the undesired pattern, modifying a behavior of the transducer driving system.
-
公开(公告)号：WO2022251782A1
公开(公告)日：2022-12-01
申请号：PCT/US2022/072312
申请日：2022-05-13
申请人： CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD. , KHENKIN, Aleksey , RICHARDSON, Justin , ROBINSON, Michael , PATTEN, David
摘要： A packaged semiconductor die may include a package terminal array comprising a plurality of terminals, wherein a spacing between the plurality of terminals of the ball grid array is less than 0.5 mm. First and second high-voltage circuits of the die may output a differential signal to a first and second terminal that may exceed 15 volts, in which the first high-voltage circuit and the second high-voltage circuit are positioned symmetrically around an axis and in which the first terminal and the second terminal are located at an edge of the package terminal array. A lowvoltage circuit may be coupled to a third terminal and positioned between the first high-voltage circuit and the second high-voltage circuit, wherein the low-voltage circuit comprises circuitry organized in columns aligned along an axis and having a width defined by a fraction of the terminal spacing pitch.
-
公开(公告)号：WO2022023577A1
公开(公告)日：2022-02-03
申请号：PCT/EP2021/071505
申请日：2021-07-30
发明人： ZHANG, Ming , LLASER, Nicolas
摘要： L'invention se rapporte à un procédé et circuit (100) de pilotage et d'alimentation de transducteurs ultrasonores à capacité commutée synchrone, contrôlé par boucle numérique. Ce circuit (100) comprend une interface de puissance (106) commandée par un générateur de signal carré ou rectangulaire multi-niveaux (102). Ce dispositif comprend un circuit d'accordage (104) qui est commandé par un circuit de commande d'accordage (109) pour présenter, avec le transducteur, une fréquence propre déterminée. Typiquement, cette adaptation comprend en entrée une inductance (L1) en série, et en sortie une capacité (C1) à connexion commandée (K1) montée en parallèle avec le transducteur (302). Cette connexion (K1) est commandée selon une différence de phase détectée (Δφ12) constatée entre l'entrée (φ1) et la sortie (φ2) de ladite inductance (L1). Elle est avantageusement asservie pour fournir une différence de phase valant π/2. L'invention se rapporte en outre à un élément ultrasonique, une tête ultrasonique, et un système ultrasonique d'imagerie et/ou de traitement, notamment médical.
-
公开(公告)号：WO2020172367A1
公开(公告)日：2020-08-27
申请号：PCT/US2020/018974
申请日：2020-02-20
发明人： KARMAKER, Rahul
摘要： An apparatus is disclosed for a harmonic rejection filter with transimpedance amplifiers. In an example aspect, the apparatus includes a harmonic rejection filter with at least three input nodes, at least one output node, a first transimpedance amplifier, a first set of transimpedance amplifiers, and a scaling current converter. The at least three input nodes include a first input node, a second input node, and a third input node. The at least one output node includes a first output node. The first transimpedance amplifier is coupled between the first input node and the first output node. The first set of transimpedance amplifiers include a second transimpedance amplifier coupled to the second input node and a third transimpedance amplifier coupled to the third input node. The scaling current converter is coupled between outputs associated with the first set of transimpedance amplifiers and an input of the first transimpedance amplifier.
-
公开(公告)号：WO2020052957A1
公开(公告)日：2020-03-19
申请号：PCT/EP2019/072769
申请日：2019-08-27
申请人： SIGNIFY HOLDING B.V.
摘要： A modulating amplifying arrangement for amplifying an input signal that accounts for noise introduced by the modulating operation. An input signal is modulated, to obtain a modulated signal, and subsequently amplified to obtain an amplified modulated signal. This amplified modulated signal is then sampled by an analogue-to-digital converter to thereby obtain amplified samples of the input signal. The modulated signal is biased by a biasing arrangement to account for a voltage offset introduced into the amplified samples by the modulating of the input signal.
-
公开(公告)号：WO2020048893A1
公开(公告)日：2020-03-12
申请号：PCT/EP2019/073251
申请日：2019-08-30
申请人： SIGNIFY HOLDING B.V.
发明人： VINAYAK, Vikas , BOONEN, Paul, Theodorus, Jacobus , DE JONGH, Frits, Tobi , HATTRUP, Christian , KRING, Chuck , WHITEHILL, Matthew, Steven , MODESTE, Rob
摘要： An amplifier or amplifying arrangement for amplifying an input signal that employs a modulating arrangement. The modulating arrangement generates a modulated signal that alternates between a reference voltage level and a voltage level of the input signal. This modulated signal is then amplified, and the amplified modulated signal is sampled to thereby obtain amplified samples of the original input signal. The reference voltage level is based upon one or more magnitude characteristics of the input signal.
-
公开(公告)号：WO2019206881A1
公开(公告)日：2019-10-31
申请号：PCT/EP2019/060327
申请日：2019-04-23
申请人： AMS INTERNATIONAL AG
发明人： MICHEL, Fridolin
摘要： The amplifier load current cancellation in a current integrator comprises applying an input current (Ι in ) to an operational transconductance amplifier provided with an integration capacitor (C int ) for current integration, leading an output current (I out ) of the operational transconductance amplifier through a sensing resistor (R sense ) t thus producing a voltage drop over the sensing resistor, generating a cancellation current (I out,cancel ) dependent on the voltage drop over the sensing resistor, and injecting the cancellation current to the output current, before or after the output current passes the sensing resistor, thus eliminating a dependence of the output current on the input current.
-
公开(公告)号：WO2018213799A1
公开(公告)日：2018-11-22
申请号：PCT/US2018/033532
申请日：2018-05-18
申请人： AVNERA CORPORATION
发明人： LINK, Garry, N. , LEE, Wai
摘要： A circuit can include a first current source, a second current source, and a differential inverter amplifier electrically coupled between the first current source and the second current source. The differential inverter amplifier can include a plurality of load resistors and a plurality of diode-connected metal oxide semiconductor (MOS) clamps configured to limit output swing and minimize common mode disturbances.
-
公开(公告)号：WO2017184458A1
公开(公告)日：2017-10-26
申请号：PCT/US2017/027743
申请日：2017-04-14
CPC分类号： H03F1/0216 , H03F1/0211 , H03F3/187 , H03F3/211 , H03F3/213 , H03F3/2175 , H03F3/68 , H03F2200/03 , H03F2200/228 , H03F2200/321 , H03F2200/462 , H03F2200/471 , H03F2200/504 , H03F2200/511 , H04R3/12
摘要： In accordance with embodiments of the present disclosure a control circuit may include at least one input for monitoring a respective signal for each of a plurality of amplifiers, an output for outputting at least one control signal for controlling a power supply level of the single signal-variant power supply configured to deliver electrical energy to the plurality of amplifiers, and decision and control logic. The decision and control logic may be configured to monitor the respective signals for each of the plurality of amplifiers and, based on the respective signals, and a respective requirement associated with each of the plurality of amplifiers, setting a power supply level of the single signal-variant power supply and outputting the at least one control signal to control the power supply level such that the respective requirements are satisfied.
摘要翻译： 根据本公开的实施例，控制电路可以包括用于监视多个放大器中的每一个的相应信号的至少一个输入，用于输出至少一个控制信号以用于控制 被配置为向多个放大器传送电能的单个信号变化电源的电源电平以及判定和控制逻辑。 决策和控制逻辑可以被配置成监视多个放大器中的每一个的相应信号，并且基于相应信号以及与多个放大器中的每一个相关联的相应需求，设置单个信号的电源电平 - 变化的电源并输出至少一个控制信号以控制电源电平，从而满足相应的要求。
-
-
-
-
-
-
-
-
-
搜索结果
75 条记录 (耗时 0.015 秒)
